KR200366719Y1 - Heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger, and more particularly, to separate the upper and lower tanks and to clamp the separated tanks to prevent cracks caused by temperature variations in the heat exchanger in which the heat exchange medium at different temperatures flow. The present invention relates to a heat exchanger that prevents cracking and leakage of a tank by adding an auxiliary tap between tube holes of a header.

Therefore, the present invention provides a plurality of tubes 130 which are divided into a first region 130a and a second region 130b through which heat exchange media at different temperatures flow; Upper and lower headers (110, 120) are formed so that the tube hole 110b is inserted so that the tube 130 is inserted, respectively coupled to both ends of the tube (130); Coupled means 170 to the upper and lower headers (110, 120) having tanks (112, 113) (122, 123) separated to communicate with the tubes 130 of the first and second regions (130a, 130b), respectively. Upper and lower tanks 111 and 121 coupled by a medium; Characterized in that made of a heat radiation fin 140 interposed between the tube 130.

Description

Heat exchanger

The present invention relates to a heat exchanger, and more particularly, to separate the upper and lower tanks and to clamp the separated tanks to prevent cracks caused by temperature variations in the heat exchanger in which the heat exchange medium at different temperatures flow. The present invention relates to a heat exchanger that prevents cracking and leakage of a tank by adding an auxiliary tap between tube holes of a header.

In general, the heat exchanger is installed on a specific flow path to allow the heat exchange medium circulating therein to absorb endothermic heat or to perform heat exchange by radiating its heat to the outside.

Such heat exchangers are manufactured in various ways depending on the purpose and purpose of use, such as a condenser and an evaporator using a refrigerant as a heat exchange medium, and a radiator and heater core using a cooling water as a heat exchange medium.

Recently, a hybrid vehicle has been developed in which an internal combustion engine and an electric motor are used in parallel as a hybrid power source.

The hybrid vehicle is divided into a system in which radiators for engines and radiators for various electric devices including electric motors are respectively configured, and a system for cooling the engine and various electric devices with the same radiator.

Hereinafter, a type of cooling the engine and various electric devices by the same radiator will be described with reference to FIG. 1.

The radiator includes a plurality of tubes (6) installed in communication with the upper and lower header tanks (2) and (3) spaced apart at regular intervals in parallel to each other, and the upper and lower header tanks (2) and (3). The heat dissipation fins 7 interposed between the elements 6 and the side supports 8 provided at the outermost sides thereof to prevent deformation of the tube 6 and the heat dissipation fins 7.

Here, the upper and lower header tanks 2 and 3 are assembled to the headers 2b and 3b and the headers 2b and 3b coupled to both ends of the tubes 6 to form flow paths therein. It consists of tanks 2a and 3a.

In addition, the upper and lower header tanks 2 and 3 are provided with baffles 10 for dividing the interior into two sides, respectively, to divide the tubes 6 into two regions.

That is, it is divided into a tube 6 through which the coolant for engine cooling flows and a tube 6 through which the coolant for cooling various electric devices flows.

In addition, each tank (2a) (3a) divided into the baffle (10), the inlet and outlet pipes (4, 4a) so that the cooling water can be introduced / discharged to the tubes 6 divided into the two areas, respectively (5, 5a) is provided.

In addition, the tank 2a is provided with a cap 9 so as to function as a passage for replenishing / exchanging cooling water and to adjust the pressure when the pressure inside the radiator 1 is excessively increased.

The cap 9 is connected to a reservoir tank (not shown) through an overflow hose (not shown), so that the cooling water expands when the cooling water in the radiator 1 is hot, and the expanded cooling water passes through the overflow hose. On the contrary, when the coolant in the radiator 1 is low temperature, shrinkage occurs, and in this case, the coolant in the reservoir tank flows back into the radiator 1 through the overflow hose.

The radiator 1 is cooled while the high temperature cooling water introduced after the engine cooling and the cooling water flowing after the cooling of various electric devices flow through the respective tubes 6, which are bound to the baffle 10 at the same time.

That is, the cooling water flowing through each of the inlet pipes 4 and 4a is passed through the tube 6 having a large heat transfer area and excellent heat transfer to rapidly exchange heat with air, thereby cooling the high temperature cooling water to a low temperature state. The low temperature cooling water is repeated through the outlet pipes 5 and 5a to the engine and various electric devices.

However, since the engine generates high heat of about 900 to 1250 ° C. in the process of burning fuel in the cylinder, the coolant that cools the engine while circulating the engine also becomes a high temperature state and flows into the radiator 1. The coolant for cooling the water is introduced into the radiator 1 at a lower temperature than the coolant for cooling the engine.

Thus, by simply installing the baffle 10 inside the upper and lower header tanks (2) and (3) and partitioning the interior to both sides, in the structure of cooling the cooling water of different temperatures using the same radiator (1) radiator ( Since the tanks 2a and 3a of 1) are used jointly, there is a problem that cracks occur on the tanks 2a and 3a side due to temperature deviation.

In addition, when a crack occurs in the tanks 2a and 3a, the heat generated from the engine and various electric devices may not be effectively cooled due to leakage of cooling water, resulting in overheating and damage of the engine and various electric devices. There was.

An object of the present invention for solving the above problems is to separate and form the upper and lower tanks to prevent cracks caused by the temperature deviation in the heat exchanger in which the heat exchange medium at different temperatures flow. It is to provide a heat exchanger that prevents cracking and leakage of the tank by adding an auxiliary tap between the tube holes of the header for clamping.

1 is a front view showing a conventional heat exchanger,

2 is a front view showing a heat exchanger according to the present invention,

3 is a cross-sectional view taken along the line A-A in FIG.

4 is an enlarged perspective view illustrating part B of FIG. 2.

<Code Description of Main Parts of Drawing>

100: heat exchanger 110: upper header

110a: tab 110b: tube hole

110c: secondary tab 111: upper tank

112, 113, 122, 123: tank 114: bend

115,116: inlet pipe 120: lower header

121: lower tank 125, 126: outlet pipe

130: tube 130a: first region

130b: second region 140: heat dissipation fin

150: side support 160: cap

170: coupling means 180: gasket

The present invention for achieving the above object is a plurality of tubes divided into a first region and a second region through which the heat exchange medium of different temperatures flow; Upper and lower headers having tube holes formed therein so that the tubes can be inserted and coupled to both ends of the tubes; Upper and lower tanks having tanks separated from each other so as to communicate with the tubes of the first and second areas, the upper and lower tanks being coupled to each other by a coupling means; Characterized in that consisting of a heat radiation fin interposed between the tube.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Repeated description of the same construction and operation as in the prior art will be omitted.

Figure 2 is a front view showing a heat exchanger according to the present invention, Figure 3 is a cross-sectional view taken along the line A-A in Figure 2, Figure 4 is an enlarged perspective view showing a portion B in FIG.

As shown, the heat exchanger 100 according to the present invention is divided into a first region 130a and a second region 130b to allow cooling water (heat exchange medium) at different temperatures to flow therein, and have a predetermined shape therein. A plurality of tubes 130 having flow paths formed therein;

A plurality of tube holes 110b are formed so that the tube 130 can be inserted, the upper and lower headers 110 and 120 coupled to both ends of the tubes 130, respectively;

And coupling means 170 to the upper and lower headers 110 and 120, having tanks 112, 113, 122 and 123 separated to communicate with the tubes 130 of the first and second regions 130a and 130b, respectively. Upper and lower tanks (111, 121) are coupled via a),

The heat dissipation fin 140 is interposed between the tubes 130 to widen the heat transfer area and promote heat exchange with the cooling water passing through the tubes 130.

In addition, the side support 150 is installed on the outermost side of the tube 130 and the heat dissipation fin 140 to prevent deformation.

In addition, the inlet pipes 115 and 116 are formed in the upper tanks 111, respectively, to allow the cooling water to be transported after cooling the engine and the cooling water to be transported after cooling the various electric devices. In addition, outlet pipes 125 and 126 are formed in the lower tank 121 so as to discharge the cooling water cooled by heat exchange while passing through the tubes 130 of the first and second regions 130a and 130b.

In addition, the upper tank 111 is provided with a cap 160 to serve as a passage function of replenishment / replacement of the coolant and to adjust the pressure when the pressure inside the heat exchanger 100 is excessively increased, and the cap 160 is connected to a reservoir tank (not shown) through an overflow hose (not shown).

On the other hand, the upper and lower tanks 111 and 121 are injection molded from various materials such as synthetic resin or aluminum.

In addition, the lower end openings of the upper and lower tanks 111 and 121 are formed with a bent portion 114 that is bent outwardly so that the bent portion 114 is formed inside the upper and lower headers 110 and 120. In the seated state is coupled / fixed by the coupling means 170 provided in the header (110, 120).

Here, it is preferable that a leak does not occur between the bent portion 114 of the upper and lower tanks 111 and 121 and the upper and lower headers 110 and 120 via a gasket 180 or the like.

The coupling means 170 is a tab 110a protruding along edges of the upper and lower headers 110 and 120 to clamp the separated tanks 112, 113, 122 and 123, respectively, and the separated tank ( And an auxiliary tab 110c formed between 112 and 113 and 122 and 123.

Here, the auxiliary tab 110c protrudes between the tube holes 110b.

That is, the tab 110a and the auxiliary tab 110c are formed along the circumferences of the separated tanks 112, 113, 122, and 123, and the protruding tabs 110a and the auxiliary tabs 110c are the upper and lower tanks. The upper and lower tanks 111 and 121 are combined with the headers 110 and 120 by bending toward the bent portion 114 of the 111 and 121.

As described above, according to the heat exchanger 100 of the present invention, the tanks 112, 113, 122, 123 of the upper and lower tanks 111, 121 are formed separately, and the separated tanks 112, 113, 122, 123 are separated. The auxiliary tanks 110c are additionally formed between the tube holes 110b of the upper and lower headers 110 and 120, respectively, so that the separated tanks 112, 113, 122, and 123 are formed in the first region 130a. ) And the tubes 130 of the second region 130b are in independent communication with each other.

Therefore, the coolant that is conveyed after the engine is cooled is cooled while flowing through the tubes 130 of the first region 130a, and the coolant that is conveyed after the cooling of the various electric devices is transferred to the tube (the second region 130b). 130 are cooled while flowing.

That is, the coolant at different temperatures is introduced into the tanks 112 and 113 separated through the respective inlet pipes 115 and 116 formed in the upper tank 111, and the coolant introduced into the tanks 112 and 113 is the first water. The tube 130 of the region 130a and the tube 130 of the second region 130b flow into the lower tank 121 while being cooled independently through active heat exchange with the outside air.

Subsequently, each cooling water introduced into the lower tank 121 is discharged through each of the outlet pipes 125 and 126.

As described above, in the present invention, the upper and lower tanks 111 and 121 of the respective tanks 112, 113, 122 and 123 are separated and formed to clamp the separated tanks 112, 113, 122 and 123. Although the configuration in which the auxiliary tab 110c is added between the tube holes 110b of the headers 110 and 120 is applied only to the radiator of the heat exchanger 100, the present invention is not limited thereto, but the condenser, the heater core, and the oil are not limited thereto. Applicable to all heat exchangers such as coolers, the same effect can be obtained.

As described above, according to the present invention, by separately forming the upper and lower tanks of the heat exchanger in which the coolant of different temperatures flow, and by forming an auxiliary tab between the tube holes of the header to clamp the separated tank, The crack of the tank due to the deviation is prevented and the leak of the cooling water is prevented.

Claims (3)

A plurality of tubes 130 divided into a first region 130a and a second region 130b through which heat exchange media at different temperatures flow; Upper and lower headers (110, 120) are formed so that the tube hole 110b is inserted so that the tube 130 is inserted, respectively coupled to both ends of the tube (130); Coupled means 170 to the upper and lower headers (110, 120) having tanks (112, 113) (122, 123) separated to communicate with the tubes 130 of the first and second regions (130a, 130b), respectively. Upper and lower tanks 111 and 121 coupled by a medium; Heat dissipation fins 140 interposed between the tubes 130 Heat exchanger, characterized in that consisting of. The method of claim 1, The coupling means 170 has tabs 110a formed along edges of upper and lower headers 110 and 120 to clamp the separated tanks 112, 113, 122, 123, respectively, and the separated tanks 112, 113. Heat exchanger, characterized in that consisting of the auxiliary tab (110c) formed between (122,123). The method of claim 2, The auxiliary tab (110c) is a heat exchanger, characterized in that formed between the tube hole (110b).